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Old 11th April 2009, 03:55 AM   #781
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Default Tech help for Audio Analogue

Thanks,
your explaination would explain the lack of response. This is a complicated issue where a schematic would help. It does seem this amp is not very well known. Which thread would you recommend?
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Old 11th April 2009, 04:49 AM   #782
fotios is offline fotios  Greece
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Default Re: Tech help for Audio Analogue

Quote:
Originally posted by VintageAmp
Thanks,
your explaination would explain the lack of response. This is a complicated issue where a schematic would help. It does seem this amp is not very well known. Which thread would you recommend?
But it is obvious that Bonsai recommends you the Solid State forum in which is found this thread "Post your solid state pics here". You must open a new thread in this forum here, with your query. It is so simple!
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Old 21st April 2009, 04:24 AM   #783
sakis is offline sakis  Greece
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Default this is

my easter toy .....

constructed this as a joy excersize .....had fun doing it ....and nobody start yanking arround my transistors !!!!!! they are real ..... bought somewhere arround the 90's i still have about 120 pairs more he he he he
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File Type: jpg easter toy 001.jpg (54.4 KB, 1996 views)
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Old 21st April 2009, 04:28 AM   #784
sakis is offline sakis  Greece
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Default please notice

...... a very strange thing .... in this project used bc546 .... for ltp and curent source , ( matched pair with thermal junction ) which bc 546 i got from a shop i dont remember ( will track down though ) and the logo was : BC546-B and down under the number 351 was printed .

suprizingly all of them had a hfe of .......351 very very closly to each other .....
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File Type: jpg easter toy 002.jpg (63.2 KB, 1901 views)
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Old 21st April 2009, 04:50 AM   #785
sakis is offline sakis  Greece
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Default nelson pass a40 ....

ready and working allright but it will have to freeze for a while before get ready to be a ready made device since no decent tip142-147 are found in the Greek market yet and then on the other hand i dont really wana go for cans ..... too much mechano to do that i am not up to these days

also another reason to freeze this is that the mosfet used for a current source is almost impossible to get ( as we speak only one resistor+cap is used ) so this part needs to be redesigned ....

the pcb is the original but i am actually tempted to make my own since i really dont like outputs wired to the pcb ..... this is something i would never do .....

regards sakis

PS .... it measures pretty fine but still havent heard anything from it ....i dont wana spoil my ears before everything very ready first ..... ha ha ha
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Old 21st April 2009, 09:13 AM   #786
sakis is offline sakis  Greece
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Default same thing as above

my easter toy ....as a dual mono version

i apologize for the construction since most of the construction i make looks really nice but this particular one was originally builted as Legend 4 but failed .... for about 20 times and then reconstructed again and again and again till i decided to do something finally useful with it ....

here is the pictures and also scope readings ....with the first one at 10 khz and the second one .....at 100khz ..... nice baby heeee
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File Type: jpg the all construction.jpg (81.2 KB, 1932 views)
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Old 21st April 2009, 09:16 AM   #787
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Default scope readings @ 10khz

scope readings at 10 khz
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File Type: jpg @10khz.jpg (60.7 KB, 1632 views)
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Old 21st April 2009, 09:17 AM   #788
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Default and scope readings at 100 khz

and scope readings at 100 khz ....

i like that .... very much i thing !!!!!!
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File Type: jpg @100khz.jpg (69.7 KB, 1085 views)
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Old 21st April 2009, 10:33 AM   #789
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Default My toys during Greek Easter

Hi Sakis

Χριστος Ανεστη!
In the attached picture are my toys for Easter. In the left, a bottle of tsipouro (very good, its price is 10,5 euro/0,7Lt) in the middle a bottle of cold water, and in the right a can of home made tsipouro (gift to me).
Ahahaha!
For the foreigners in this post, the red egs are for cracking, a Greek custom of Easter.

Fotios
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Old 21st April 2009, 12:50 PM   #790
sakis is offline sakis  Greece
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Default my friend fotios

is having a better time i think !!!!!

best regards !!!

χρονια πολλα
χριστος ανεστη φιλε !!!!

the above is greek easter creetings !!!!
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